Hair straightener



FIG. 1 is a perspective view of a hair straightener showing my newdesign;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an enlarged view of portion 9 shown in FIG. 1.

The broken lines in the drawings depict portions of the hairstraightener that form no part of the claimed design. The dash-dotbroken lines in FIGS. 1 and 9 are to show an enlargement and form nopart of the claimed design.

CLAIM The ornamental design for a hair straightener, as shown anddescribed.